I'm just an amateur, probably why I find the de Broglie/Bohm/Couder approach to QM compelling. But Copenhagen struck back: in a coincidence, Bohr's grandson is a fluid physicist who claims that Couder drops can't reproduce the quantum interference in a double slit experiment if you add a long wall that separates the paths from the source to the two slits. He says the drop will stay on one side of the wall, so the wave on the other side will dissipate. I can think of at least two problems:
- Can't the drop tunnel through the wall? Bohm says the drop choosing one side breaks the symmetry necessary for interference, but since the drop may symmetrically choose either side and tunnel to the other, isn't symmetry preserved?
- The ideal fluid is supposed to be non-dissipative, so couldn't something focus the wave such that it would regenerate indefinitely?